Reilly became a fan favorite of Bills Mafia after signing with the team as an undrafted free agent in 2017. He impressed during the ensuing training camp and preseason and was the team’s leading receiver, however, Reilly spent most of the 2017 season on the team’s practice squad. Reilly was called up to the 53-man roster toward the end of the season,however, during that stretch, he never saw game action.

At the end of 2018’s preseason which was underwhelming for him due to injuries, Reilly was cut by the Bills.

“Kind of was blindsided, getting cut,” Reilly said to Big Red News after being released by Buffalo. “But that’s kind of the nature of the NFL — you never know what to expect.”

Since being released, Reilly recently revealed to the Lincoln Journal Star he nearly signed with the Saints but was injured during a workout. He also worked out with the Lions and “a few other teams” but didn’t sign until the Cowboys offered him a contract because he was considering playing in the Alliance of American Football League.

“I was literally talking to a few teams and about to sign, then my agent called Sunday night saying the Cowboys wanted me so I flew out here (to Dallas) on Monday,” Reilly said.